On the rarity of FK COM stars

Details On the rarity of FK COM stars On the rarity of FK COM stars

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90..120h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, Jan. 1985, p. 120-122.

Astronomy and Astrophysics

Astronomy

8

Giant Stars, Late Stars, Stellar Spectrophotometry, Density Distribution, Emission Spectra, G Stars, Hertzsprung-Russell Diagram, Line Spectra, Southern Sky, Spectral Line Width, Stellar Evolution, Stellar Rotation

Scientific paper

Very high-dispersion spectra (2.5 Å mm-1) were obtained of 31 southern late-type stars, predominantly early G giants, in an effort to find new rapidly rotating, active stars which would be FK Com-like. Measurements of linewidths and the strength of chromospheric Ca II K-line emission are presented, but no new star could be added to the class of "rapid rotators". Space densities and evolutionary lifetimes for FK Com stars are discussed.

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